One Dallas Area Rapid Transit officer was fatally shot, the agency tweeted.
It's not clear if Brown included the DART officers in his tally.
Brown said two snipers shot the 10 from elevated positions during a protest. Two officers are in surgery and three are in critical condition. No suspects were in custody.
Three other DART officers were also shot. Their injuries are not considered life-threatening, DART said.
Four DART police officers were shot in downtown Dallas. 1 deceased, others not life-threatening. No IDs yet. Updates via twitter.
— dartmedia (@dartmedia)
July 8, 2016
The suspects are still at large. This is a developing story.